What is the double layer theory?

The electric double layer theory describes the interaction between surfaces of colloidal particles and ions that are present in the fluid in which the colloidal particles are dispersed (Moore and Reynolds, 1997).

What is double layer effect?

An electric double layer is a phenomenon that plays a fundamental role in the mechanism of the electrostatic stabilization of colloids. Colloidal particles gain negative electric charge when negatively charged ions of the dispersion medium are adsorbed on the particle surface.

How do electric double layer capacitors work?

Electric double-layer capacitors are based on the operating principle of the electric double-layer that is formed at the interface between activated charcoal and an electrolyte. Activated charcoal is used in its solid form, and the electrolytic fluid is liquid.

In which theory the electrical double layer is considered similar to a capacitor?

Helmholtz double layer
The separation of charges exists like in a capacitor. The two oppositely charged layers constitute the Helmholtz double layer. The double layer was compared to parallel plates by Helmholtz. A potential difference is thus created between the metal and solution.

What is double layer capacitance?

Double layer capacitance is a way to store an electrical charge using an electrode, having a double layer, immersed in an electrolyte. These two layers consist of oppositely charged ions. They are insulated by a thin layer that sticks to the electrode’s surface. Double layer capacitance is used…

How do you calculate equivalent capacitance?

The equivalent capacitance for series-connected capacitors can be calculated as 1 / C = 1 / C1 + 1 / C2 + . . + 1 / Cn (2) For the special case with two capacitors in series – the capacitance can be expressed as.

What is the equation for capacitance?

The capacitance of a capacitor is the ability of a capacitor to store an electric charge per unit of voltage across its plates of a capacitor. Capacitance is found by dividing electric charge with voltage by the formula C=Q/V.